What is the name of the Realm of Monsters in Moana?

The Realm of Monsters in Moana is called Lalotai.

Moana and Maui travel to Lalotai to recover Maui’s magical fishhook, which has been taken by Tamatoa, a gigantic, treasure-collecting coconut crab. The sequence introduces a bizarre underworld filled with strange creatures and gives the film one of its most visually distinctive settings.

Lalotai is easy to confuse with Motunui, Moana’s island home, or Te Fiti, the goddess whose stolen heart drives the story. The Kakamora are also associated with Moana’s ocean journey, but they are small, armor-wearing coconut pirates—not the name of the monster realm. Tamatoa’s song “Shiny” is the musical centerpiece of the Lalotai scene.